Demand Flashcards
(37 cards)
Define demand:
The quantity of a good or service that consumers are willing and able to buy at any given price over a given time period
What is a contraction in demand
Where price increases so quantity demanded decreases
What is an extension in demand
Where price decreases so quantity demanded increases
Define: PED
A measure of the responsiveness of quantity demanded of a good following a change in price
PED equation
% change in QD / % change in P
Percentage change calculation
% change = ((New - Original) / Original) x 100
PED is always ___________
Negative
If PED is greater than 1 then it is considered ____________
Elastic
If PED is smaller than 1 then it is considered ____________
Inelastic
What does elastic mean
Elastic means that consumers respond a lot to a change in price
What does inelastic mean
Inelastic means that consumers respond less to a change in price
PED of 1 =
Unitary Price Elasticity
What does unitary price elasticity mean
That price and quantity change the same amount
Elastic demand curve is ___________
Horizontal
Inelastic demand curve is ___________
Verticle
What is the shape of unitary price elasticity
Curved (Like the first half of a U)
Factors which influence PED
NASBIT
- Necessity
- Addiction / habits
- Substitutes
- Brand loyalty
- Proportion of Income
- Time period
Necessities are ____________ while luxuries are ____________
Necessities - Inelastic
Luxuries - Elastic
Addictive goods are ___________
Inelastic
Goods with many substitutes are ____________
Goods with few substitutes are ____________
Many substitutes - Elastic
Few substitutes - Inelastic
Strong brand loyalty - ____________
Weak brand loyalty - _____________
Strong brand loyalty - Inelastic
Weak brand loyalty - Elastic
High proportion of income - _____________
Low proportion of income - _____________
High proportion of income - Elastic
Low proportion of income - Inelastic
Goods are ___________ in the short run
Short run - Inelastic
Goods are __________ in the long run
Long run - Elastic